Specific Gene Expression in Lgr5 + Stem Cells by Using Cre-Lox Recombination.

Intestinal stem cells are responsible for tissue renewal. The study of stem cell properties has become a major challenge in the field. We describe here a method based on Cre recombinase inducible lentivirus vectors that permits delivery of transgenes, either for overexpression or knockdown, in primary stem cells that can be cultured in an 3D intestinal organoid system. This method is an excellent approach for genetic manipulation and can complement in vivo transgenic experiments.